JOHANNESBURG, South Africa -- South Africa's Kruger National Park is considering a plan to move some rhinos out of the flagship wildlife reserve in an attempt to protect them from poachers.

The goal is to "spread the risk" by evacuating rhinos to other game reserves because Kruger park is heavily targeted by poachers, park spokesman William Mabasa said Monday. No decision has been made on the proposal and there is no guarantee that other parks are safe since "poachers are going everywhere," he said.

Many poachers cross into Kruger from neighbouring Mozambique, and they are often able to elude ranger teams that operate with limited aerial surveillance across the vast park of 19,485 square kilometres.

About 560 rhinos have been poached in South Africa so far this year, and well over half were killed in Kruger park in the northeastern part of the country, the national parks service said earlier this month. About 160 suspected poachers have been arrested in 2014.

South Africa, which has 70 per cent of the world's rhinos, lost a record 1,004 of the animals to poachers in 2013, according to government figures. Conservationists warn that a "tipping point" could come as soon as next year when rhino deaths exceed births and the population goes into decline.

International criminal syndicates are said to be involved in poaching rhinos, whose horn is worth a fortune on the illegal market in parts of Asia. Some Vietnamese and Chinese view it as a status symbol and a healing agent.

Kruger park, a popular destination for international tourists, has borne the brunt of rhino poaching for years despite international efforts to help conservation efforts there. In March, American philanthropist Howard Buffett, a son of investor Warren Buffett, pledged nearly $24 million for protecting rhinos, earmarking the money for ranger teams, sniffer dogs and other security measures in one-third of the Kruger park.

Mabasa, the Kruger spokesman, did not say how many rhinos might be moved from Kruger under an evacuation proposal that is being discussed at the park's "board level."

Kruger has experience in moving rhinos, dispatching them to private game reserves inside South Africa and to conservation agencies outside the country, Mabasa said. He noted that rhinos were sent to Kruger from what is today KwaZulu-Natal province, south of the park, in the 1960s.

Five poachers, including one who was injured in a firefight with an anti-poaching patrol, were arrested at a game reserve in KwaZulu-Natal, a South African news agency quoted police as saying Sunday. The suspects were found with an unlicensed hunting rifle, ammunition, a silencer and an axe, and face charges including illegal hunting and attempted murder, according to the South African Press Association.

South Africa is considering whether to propose a regulated trade in rhino horn in order to curb poaching. Legalization would require the approval of CITES, the international body that monitors endangered species which will meet in South Africa in 2016.